An H2O Maser survey towards BGPS sources in the Outer Galaxy

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 恒星形成与演化研究团组

	An H2O Maser survey towards BGPS sources in the Outer Galaxy
	Xi, Hong-Wei1,2 ; Zhou, Jian-Jun1,3 ; Esimbek, Jarken1,3 ; Wu, Gang1,3 ; He, Yu-Xin1,2 ; Ji, Wei-Guang1,3 ; Tang, Xiao-Ke1,2 ; Yuan, Ye1,3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2016-06-01
卷号	16 期号:6
关键词	masers radio lines: ISM stars: formation
ISSN号	1674-4527
英文摘要	We performed an H2O maser survey towards 274 Bolocam Galactic Plane Survey (BGPS) sources with 85 degrees < l < 193 degrees using the Nanshan 25 m radio telescope. We detected 25 H2O masers, and five of them are new detections. The detection rate of H2O masers in our sample is 9% which is very low. The detection rate of H2O masers increases as the 1.1 mm flux density of BGPS sources increases, and both the peak flux density and luminosity of H2O masers increase as the sources evolve. The detection rate of H2O masers toward BGPS sources without HCO+ emission is low. The BGPS sources associated with both H2O and CH3OH masers seem to be more compact than those only associated with H2O masers. This indicates that the sources with both masers may be in a relatively later evolutionary stage. The strongest H2O maser source G133.715+01.217, also well known as W3 IRS 5 which has a flux density of 2.9x10(3) Jy, was detected at eight different nearby positions. By measuring the correlation between the flux densities of these H2O masers and their angular distance from the true source location, we get the influence radius r = 1/0.8 log(F-0/3rms). For our observations, strong sources can be detected anywhere within this radius. It is helpful to determine whether or not a weak maser nearby the strong maser is a true detection.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	STAR-FORMING REGIONS ; GALACTIC PLANE SURVEY ; DUST CONTINUUM SOURCES ; YOUNG STELLAR OBJECTS ; GLIMPSE POINT SOURCES ; GHZ METHANOL MASERS ; WATER MASER ; IRAS SOURCES ; AU SCALES ; CATALOG
收录类别	SCI
语种	英语
WOS记录号	WOS:000377524600004
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/1400]
专题	恒星形成与演化研究团组新疆天文台_射电天文研究室
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Xi, Hong-Wei,Zhou, Jian-Jun,Esimbek, Jarken,et al. An H2O Maser survey towards BGPS sources in the Outer Galaxy[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(6).
APA	Xi, Hong-Wei.,Zhou, Jian-Jun.,Esimbek, Jarken.,Wu, Gang.,He, Yu-Xin.,...&Yuan, Ye.(2016).An H2O Maser survey towards BGPS sources in the Outer Galaxy.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(6).
MLA	Xi, Hong-Wei,et al."An H2O Maser survey towards BGPS sources in the Outer Galaxy".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.6(2016).